Summary: 561t17Physics 201, Exam 1 Name_____________________________________________________
The multiple-choice problems carry no partial credit.
Circle the correct answer or answers.
But in the work-out problems, you are graded on your work, with partial credit.
Be sure to include the correct units in the answers, and give your work in the space provided.
1. (5) This actually happened to a friend ofmy son when they were in high school a few years ago and on a
carnival ride together: At the top of the ride, about 15 meters above the ground, the friend's celiphone fell
out of his pocket. If the cellphone started from rest, it fell straight down, and air resistance is neglected,
what was its approximate speed when it hit the ground?
(a) 147 mIs `lJ- "U + 2
(c)294m1s -- 2
(d)12m/s
(e)52m1s Tun;5 ob;-Ie4°
· · ..`5/j7/ JhL.eT
z
FEIZm7] 3
2. (5) Approximately how long did it take to reach the ground?
(a)1.53s
(b)3.06s
(c) 2.42 s = - (_